In December 2021, all CPI cities in North Sumatra recorded inflation, namely Sibolga at 0.17 percent; Pematangsiantar by 0.85 percent; Medan by 0.44 percent; Padangsidimpuan by 0.35 percent; and Gunungsitoli by 0.62 percent. Thus, the combined 5 CPI cities in North Sumatra in December 2021 had an inflation of 0.46 percent.
In December 2021, Medan inflation was 0.44 percent or there was an increase in the Consumer Price Index (CPI) from 105.46 in November 2021 to 105.92 in December 2021. Inflation occurred due to an increase in prices from seven expenditure groups, namely the food and beverage group. , and tobacco by 1.00 percent; clothing and footwear group by 0.25 percent; housing, water, electricity, and household fuel groups by 0.10 percent; household equipment, equipment, and routine maintenance group by 0.30 percent; transportation group by 0.11 percent; food and beverage/restaurant supply group by 0.68 percent; and the personal care and other services group by 0.21 percent. On the other hand, the groups that experienced a decline in prices were the information, communication, and financial services group by 0.07 percent; and recreation, sports, and culture groups by 0.03 percent. The other two expenditure groups did not experience changes in the index, namely the health group; and education groups.
The main commodities contributing to inflation during December 2021 in Medan include, cayenne pepper, tuna/ambu-ambu fish, broiled chicken eggs, cooking oil, broiled chicken, rice with side dishes, and fried chicken.
Of the 24 CPI cities on the island of Sumatra, 22 cities recorded inflation. The highest inflation was in Pangkal Pinang at 1.27 percent with a CPI of 107.16 and the lowest in Pekanbaru at 0.07 percent with a CPI of 106.53.